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Earn +20 ptsQ: What 4 numbers can make 81?
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What 2 prime numbers times together to make 81?
It takes four. 3 x 3 x 3 x 3 = 81
What is the HCF of 81 243 and 1215?
To find the highest common factor (HCF) of 81, 243, and 1215, we first need to find the prime factorization of each number. The prime factorization of 81 is 3^4, 243 is 3^5, and 1215 is 3^5 * 5. To find the HCF, we look for the highest power of each prime factor that appears in all the numbers. In this case, the highest power of 3 that appears in all three numbers is 3^4, so the HCF of 81, 243, and 1215 is 81.
What are the prime numbers. between 81 and 90?
The only prime numbers between 81 and 90 is... 83
What 2 prime numbers have the sum of 81?
They are: 79+2 = 81
What is 4 9ths of 81?
36 is 4 9ths of 81.
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